From c9c8e012c92bc57ab137c7eee52a7dd15ecdffa0 Mon Sep 17 00:00:00 2001
From: Aaron Parecki <aaron@parecki.com>
Date: Tue, 25 Oct 2022 17:58:32 +0000
Subject: [PATCH] load recent history from shared links

---
 compass/app/Http/Controllers/Api.php   |  2 +-
 compass/app/Http/Controllers/Share.php | 56 ++++++++++++++++++++++++++
 compass/app/Http/routes.php            |  1 +
 compass/public/assets/share.js         | 18 ++++++++-
 4 files changed, 74 insertions(+), 3 deletions(-)

diff --git a/compass/app/Http/Controllers/Api.php b/compass/app/Http/Controllers/Api.php
index 3812ec4..cf0041a 100644
--- a/compass/app/Http/Controllers/Api.php
+++ b/compass/app/Http/Controllers/Api.php
@@ -63,7 +63,7 @@ class Api extends BaseController
 
       foreach($results as $id=>$record) {
         // When returning a linestring, separate out the "event" records from the "location" records
-        if($record->data) {
+        if(is_object($record) && $record->data) {
           if(property_exists($record->data->properties, 'action')) {
             $rec = $record->data;
             # add a unixtime property
diff --git a/compass/app/Http/Controllers/Share.php b/compass/app/Http/Controllers/Share.php
index db3d2fc..8df8a74 100644
--- a/compass/app/Http/Controllers/Share.php
+++ b/compass/app/Http/Controllers/Share.php
@@ -5,6 +5,7 @@ namespace App\Http\Controllers;
 use Laravel\Lumen\Routing\Controller as BaseController;
 use Illuminate\Http\Request;
 use DB;
+use Quartz;
 
 class Share extends BaseController
 {
@@ -38,11 +39,66 @@ class Share extends BaseController
   public function current_location(Request $request) {
     $database = $this->_databaseFromToken($request->input('token'));
 
+    if(!$database) {
+      return response(json_encode(['error' => 'invalid']))->header('Content-Type', 'application/json');
+    } 
+
     $response = [
       'data' => json_decode($database->last_location),
     ];
 
     return response(json_encode($response))->header('Content-Type', 'application/json');
   }
+  
+  public function history(Request $request) {
+    $database = $this->_databaseFromToken($request->input('token'));
+   
+    if(!$database) {
+      return response(json_encode(['error' => 'invalid']))->header('Content-Type', 'application/json');
+    } 
+    
+    $share = DB::table('shares')
+      ->where('token', $request->input('token'))
+      ->first();
+    $share_date = strtotime($share->created_at);
+  
+    $locations = [];
+    
+    $db = new Quartz\DB(env('STORAGE_DIR').$database->name, 'r');
+    $results = $db->queryLast(100);
+    foreach($results as $id=>$record) {
+      if(!is_object($record) || !$record->data)
+        continue;
+        
+      if(!property_exists($record->data->properties, 'horizontal_accuracy')
+          || $record->data->properties->horizontal_accuracy >= 5000)
+        continue;
+         
+      // Make sure this is from after the share was created  
+      $record_date = $record->date->format('U');
+      
+      if($record_date < $share_date)
+        continue;
+
+      $locations[] = $record->data;
+    }
+    
+    $linestring = array(
+      'type' => 'LineString',
+      'coordinates' => [],
+    );
+    foreach($locations as $loc) {
+      if(property_exists($loc, 'geometry'))
+        $linestring['coordinates'][] = $loc->geometry->coordinates;
+      else
+        $linestring['coordinates'][] = null;
+    }
+    
+    $response = array(
+      'linestring' => $linestring,
+    );
+
+    return response(json_encode($response))->header('Content-Type', 'application/json');
+  }
 
 }
diff --git a/compass/app/Http/routes.php b/compass/app/Http/routes.php
index c5ee012..a1d04ce 100644
--- a/compass/app/Http/routes.php
+++ b/compass/app/Http/routes.php
@@ -4,6 +4,7 @@ $app->get('/', 'Controller@index');
 
 $app->get('/s/{token:[A-Za-z0-9]+}', 'Share@view');
 $app->get('/share/current.json', 'Share@current_location');
+$app->get('/share/history.json', 'Share@history');
 
 $app->post('/auth/start', 'IndieAuth@start');
 $app->get('/auth/callback', 'IndieAuth@callback');
diff --git a/compass/public/assets/share.js b/compass/public/assets/share.js
index 909ea74..8225b24 100644
--- a/compass/public/assets/share.js
+++ b/compass/public/assets/share.js
@@ -35,6 +35,7 @@ var startIcon = L.icon({
 
 var currentLocationMarker;
 var currentTrack;
+var lastSeenTimestamp;
 
 function getCurrentLocation() {
   var interval = 5000;
@@ -46,14 +47,27 @@ function getCurrentLocation() {
   $.getJSON("/share/current.json?token="+$("#share_token").val(), function(data){
     if(data.data) {
       moveMarkerToPosition(data.data);
-      map.setView(currentLocationMarker.getLatLng());
+      if(lastSeenTimestamp != data.data.properties.timestamp) {
+        map.setView(currentLocationMarker.getLatLng());
+      }
+      lastSeenTimestamp = data.data.properties.timestamp;
     }
     setTimeout(getCurrentLocation, interval);
   });
 }
 
-getCurrentLocation();
+function getRecentHistory() {
+  $.getJSON("/share/history.json?token="+$("#share_token").val(), function(data){
+    if(data.linestring) {
+      L.geoJson(data.linestring, {
+        style: geojsonLineOptions
+      }).addTo(map);
+    }
+  });
+}
 
+getCurrentLocation();
+getRecentHistory();